Combined valve and yoke



Sept. 19, 1933. A. P. HORNOR 1,927,170

COMBINED VALVE AND YOKE Filed March l,v 1930 INVENTOR.

A TTORNEY Patented Sept. 19, 1933 COMBINED VALVE AND YOKE Aurelius P.Hornor, Caldwell, N. J., assignor to lE-K. Medical Gas Laboratories,Incorporated, West Orange, N. J., a corporation of New JerseyApplication March 1, 1930. Serial No. 432,321

Claims.

My invention relates to an improved combined valve and yoke and moreparticularly to improvements in the construction of a combined valve andyoke adapted to be used to facilitate the con 5 trol of the flow of afluid from a container.

Fluids stored under high pressure (often 1500 to 2000 pounds per squareinch) are frequently used for commercial or medical purposes. When sucha fluid is administered to patients by the medical profession, it isessential that a very delicate and accurate control over the flow of thefluid from the container therefor, be provided. Fluids are generallyprepared for such use by introducing them under high pressure intostrong containers or flasks which are equipped with an ordinary shut-offvalve. Such valves are usually incapable of permitting an accurate anddelicate control of the flow of the fluid from the contain- A flask orcontainer such as those in common use, is provided with a passageway soassociated with the valve as to provide an outlet for the fluid when thevalve is opened. In order that the fluid may be conveyed withoutdissipation to the point at which it is to be used, it is desirable thata suitable tube be supplied and suitable means be provided forconnecting the conveying tube to the outlet of the container. The tubesmost commonly used for such purposes are formed 30 from flexible rubberhose.

One of the objects of this invention is to provide an improved combinedvalve and yoke of simple and inexpensive construction adapted to be usedwith a container, in which a fluid has been stored, to afford anaccurate and delicate control of the how of the fluid therefrom. 1

Another object of the invention is to provide in a combined valve andyoke of this character, an improved construction having provision forthe connection of a conveying tube and also for affording a convenientand delicate control of the flow of fluid to such tube.

Another object of the invention is to provide a combined valve and yokeof improved design which will effectually control the flow of fluidsunder high pressure, during a long period of use.

Other and further objects of the invention will be obvious upon anunderstanding of the preferred embodiment about to be described, or willbe indicated in the appended claims, and various advantages not referredto herein will occur to those skilled in the art upon employing theinvention in practice 7 In order that my invention may be more clearly'understood a preferred embodimenthas been chosen, for purposes ofillustration and description and-is shown in the accompanying drawing,

wherein:

Fig. -1 is an elevation, partly in section, of a container equipped withone embodiment of my invention and yoke.

- Referring to the drawing, the numeral 1 indicates the top portion ofthe usual container or flask and 2 the usual outlet valve casing tightlysecured within and extending from the neck 3 of the flask. For purposesof description the valve casing 2 will be considered as divided into twosections, the lower one of which is indicated by the numeral a and theupper one by the numeral 5. The usual shut-off valve (not shown) is sopositioned within the casing 2 as to permit or prevent, as the case maybe, the flow of fluid from the container to a cylindrical outlet openingor passageway 6 provided the lower 4 of the casing. A valve stem 7, bymeans of which the shut-off valve may be opened or closed, extends fromthe upper section 5 through a gland or stuffing box 8. That part of thelower section of the valve casing which extends from the container 1, issubstantially rectangular in cross section but has one end i, oppositethat end in which the opening 6 terminates, formed as a portion of acylinder. The upper section 5 of the valve casing is circular in crosssection, its diameter being slightly less than the width of the lowersection 4.

According to my invention a frame or yoke 9 havinga rectangular opening9, is adapted to be positioned about and secured to the lower section 4of the valve casing 2, as shown, with its ends 10 and llrespectivelyfacing the end 4 of said section and the end of the latter in of theyoke so that its conical end 14 tightly engages a depression 15 formedin said end 4 of the lower section of the usual valve casing 2 of thecontainer.

The inner end of the seat or depression 15 lies in an extension of theaxis of the passageway 6. The end. 11 of the frame or yoke has anintegral tubular portion 16 extending therefrom which is slightlysmaller in outside diameter than the depth of the frame and which iscoaxial with opening 13 in the end 10 of the frame. The bore 17 of thetubular portion 16 is extended through the end 11 of the frame 9 to theopening 9. A tubular member 18, having an annular collar or flange 19intermediate its ends, has one end portion thereof forced with afluid-tight fit into the inner end portion of the bore 1'7 to a positionin which the collar 19 engages a shallow seat 20 formed in the wall ofthe frame opening 9' about the inner end of said bore. The other endportion of member 18 projects a substantial distance into the opening 9of the frame or yoke, and also when the frame is mounted on the lowersection of valve casing 2 as shown, well into the opening or passageway6 which is slightly greater in diameter than said end portion. Toprovide a fluid-tight connection between the tubular member 18 and theusual valve casing, when the yoke or frame is so mounted on the lowersection 4 and the screw 12 is tightened to clamp the yoke firmly inposition thereon, a packing ring or washer 21 is disposed around thesaid tubular member between the flange 19 and the adjacent flat end ofthe section 4.

The bore of the tubular member 18 is coaxial with the bore 17 andcomprises an inner end portion 22 of small cross section, anintermediate portion which is of substantially greater cross sectionthan the portion 22, and a very short outer end portion which is onlyslightly greater in crosssection than the said inner portion. An insert23 is formed within the intermediate largest portion of the bore ofmember 18, preferably by melting some comparatively soft metal, such aslead, pouring the molten metal into said portion and then permitting itto cool and harden. The insert 23 is provided in any suitable manner,with a longitudinal passageway which is coaxial with the inner endportion 22 of the bore of member 18' and is of the same size as suchportion except at its outer end portion, which is conical and flaresoutwardly.

Reference character 24 designates a cylindrical plunger or stem which isslidably mounted and fits snugly within the bore 17 of the tubularportion 16 of the yoke, the said plunger being of such length that itextends outwardly, for a considerable distance, from said tubularportion. At its inner end the plunger 24 is provided with a reducedconical portion 25 constituting a valve which is adapted to coact withthe insert 23 of member 18 to control the flow of fluid from thecontainer, the wall of the outer conical end portion of the bore of theinsert forming a seat for such valve. Between its reduced portion 25and. its main body portion, plunger 24 is provided with a beveledshoulder 26. An opening 27' extends inwardly from and substantially atright angles to the face of the shoulder 26 and connects with apassageway 28 which extends therefrom and axially of the plunger to theouter end of the latter. The passageway 28 is provided with anenlargement 29 at its outer end portion into which a screw 30 isthreaded, this screw having an axial opening 31 extending therethroughof the same size as the main portion of the passageway 28. The plunger24 is provided with a collar 32 which when the valve 25 engages its seatin the insert 23, is positioned only a slight distance beyond the end ofthe tubular portion 16 of yoke 9. A small opening 33 provided in thetubular portion 16 and extending longitudinally thereof, is slidablyengaged by a pin 34 fixed to the collar 32, and coacts with such pin toprevent rotary movement of plunger 24 in the bore 1'7 of said tubularportion while permitting sliding movement of the plunger to and from theposition (shown in Fig. 1) in which the reduced end portion or valve 25thereof engages its seat in insert 23, A nut 35 is mounted on and inscrew-threaded engagement with the tubular portion 16, and is providedat its outer end with an inwardly extending annular flange 35 whichprojects between the collar 32 and the adjacent 90 inner end of a sleeve3'7 on the outer end portion of plunger 24. Suitable wear preventingwashers 36 and 38 are disposed on the plunger between the flange 35 ofnut 35 and the collar 32 and sleeve 3'7 respectively. The sleeve 37 fitsclosely on-plunger 24 and is held in proper assembled position thereonby screw 30, the head of which is seated in a countersink 39 provided inthe outer end of the sleeve. Obviously'upon' turning nut 35-, flange 35'thereof will coast with collar 32 or sleeve 3'7 to effect slidingmovement of plunger 24 either inwardly or outwardly of the bore 1'7,dependent upon the direction of such turning. A flat strip 40 is securedat its inner end, as by a screw 41, to the end 11 of the yoke 9 and isprovided with an angular outer end portion 42 which projects into thepath of nut 35 and serves as a stop to limit the outward movement of thelatter and thereby prevent the same from being turned off the tubularportion 16 of the yoke and accidental removal of the plunger 24 from thebore 1'7.

From the foregoing it will be apparent that if the yoke or frame 9 isclamped on the lower sec"- tion 4 of the usual valve casing, as shown,and the usual shut-off valve is opened by turning the stem 7, fluidunder pressure from within the container 1 will flow through the outletopening 6 into the bores of member 18 and its insert 23, but will bepreventedfrom leaving said member 18, assuming the valve 25 is then inits closed po sition in, engagement with the seat therefor provided inthe insert. Upon now turning the nut 35 so as to move it away frommember 18, the plunger 24 will also be moved away from said member andthe valve 25 thereby opened. With the construction described the degreeof opening of valve 25 and thereby the flow of fluid from tank 1 throughthe member 18 and its insert 23, can be very nicely, sensitively andaccurately regulated from a point where such flow is very minute to a.point where the flow is equivalent to the full capacity of the bore 22of member 18. The fluid which thus flows through the tubular member 18is discharged into the bore or passageway 1'7, from whence it flowsthrough the opening 2'7 and passageway 28 of plunger 24 and opening 31of screw 30 into a conveying tube 44 formed of suitable resilientmaterial, preferably rubber, which is connected to the sleeve 3'7 byhaving one end portion thereof forced over the annular serrations 45formed on the sleeve. It. will be noted that upon turning the nut 35 toimpart. a limited rectilinear movement to the plunger or stem 24, thesleeve 3'7 will not be rotated although 145 it will, of course, moveinwardly or outwardly, as the case may be, with the plunger. Thisconstruction permits opening and' closing of the valve withoutdisconnecting the conveying tube 44.

One of the features of my invention resides III) in the constructionwhereby only non-rotary sliding or rectilinear movements are imparted tothe plunger 24 in the operation of the device described. Because ofthis, wear between the lead insert 23 and the valve 25, which ispreferably formed of a material harder than lead, is reduced to aminimum. The working life of the device is thus greatly prolonged as thevalve 25 will not soon become worn, scarred, or cut. It is'not essentialthat lead be used for the insert 23, as any rigid material which issofter than that of the valve or conical end portion 25 of the plungercan be used. I prefer to use lead, however, because of its low fusionpoint and readily workable qualities.

As various changes may be made in the shape, form and arrangement of theparts of the structure herein specifically described, without departingfrom the spirit of the invention, all matter contained herein is to beinterpreted as illustrative and not in a limiting sense.

Having thus described my invention, what I claim as new and desire toprotect by Letters Patent, is as follows: I

1. In a device of the class described, in combination a frame providedwith an opening and adapted to be secured to the outlet of a container,:1 member associated with said opening in said frame and having anopening adapted to be registered with the outlet of the container, aplunger movably mounted in respect to said opening in said frame, aninsert of softer material than said plunger disposed within said memberand having an opening communicating with the opening in such member,said plunger having an unperforated portion adapted to cooperate withthe opening in said insert and having another portion provided with anopening adapted to be in communication with the opening in said frame,and means for adjusting said plunger in respect to said frame so as tomove the said unperforated portion thereof either into or out offluid-tight engagement with said insert, whereby the flow of a fluidfrom said container may be regulated.

2. In a device of the class described, in combination, a frame, a membermounted in association with said frame and having a passageway adaptedto be registered with the outlet of a container, a plunger slidablymounted on said frame, means operable to effect sliding movement of saidplunger into and out of engagement with said member to therebyrespectively close and open said passageway, and means for holding saidplunger positively against rotation when so moved.

3. In a device of the class described, in combination, a frame, a membercarried by said frame and having an opening, a plunger slidably mountedin association with said frame and adapted to engage said member toclose said opening, means mounted on said frame for rotary movementindependent of movement of said frame and adapted in such movement toeifect positive nonrotating and sliding movement of said plunger toclosing or unclosing position with respect to said opening, and meansfor limiting the extent of such movement of the plunger.

4. In a device of the class described, in combination, a frame adaptedto be removably secured to the outlet member of a container, an elementassociated with said frame and having an opening adapted to be incommunication with the outlet of said container when the frame is sosecured to said outlet member, a plunger, positively held againstrotation having a longitudinally extending opening in communication withthe opening in said element, said plunger having a portion adapted tocooperate with the opening in said element to control the flow of fluidfrom the container through said outlet and openings, and means formoving said plunger into and out of engagement with said element.

5. In a device of the class described, in combination, a frame having apassageway, means

